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Diffstat (limited to 'framework/src/onos/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java')
-rw-r--r--framework/src/onos/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java652
1 files changed, 0 insertions, 652 deletions
diff --git a/framework/src/onos/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java b/framework/src/onos/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java
deleted file mode 100644
index bc8721d7..00000000
--- a/framework/src/onos/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java
+++ /dev/null
@@ -1,652 +0,0 @@
-/*
- * Copyright 2015 Open Networking Laboratory
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.onosproject.pcep.controller.impl;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.SocketAddress;
-import java.nio.channels.ClosedChannelException;
-import java.util.Collections;
-import java.util.Date;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.ListIterator;
-import java.util.concurrent.RejectedExecutionException;
-
-import org.jboss.netty.channel.Channel;
-import org.jboss.netty.channel.ChannelHandlerContext;
-import org.jboss.netty.channel.ChannelStateEvent;
-import org.jboss.netty.channel.ExceptionEvent;
-import org.jboss.netty.channel.MessageEvent;
-import org.jboss.netty.handler.timeout.IdleState;
-import org.jboss.netty.handler.timeout.IdleStateAwareChannelHandler;
-import org.jboss.netty.handler.timeout.IdleStateEvent;
-import org.jboss.netty.handler.timeout.IdleStateHandler;
-import org.jboss.netty.handler.timeout.ReadTimeoutException;
-import org.onlab.packet.IpAddress;
-import org.onosproject.pcep.controller.PccId;
-import org.onosproject.pcep.controller.driver.PcepClientDriver;
-import org.onosproject.pcepio.exceptions.PcepParseException;
-import org.onosproject.pcepio.protocol.PcepError;
-import org.onosproject.pcepio.protocol.PcepErrorInfo;
-import org.onosproject.pcepio.protocol.PcepErrorMsg;
-import org.onosproject.pcepio.protocol.PcepErrorObject;
-import org.onosproject.pcepio.protocol.PcepFactory;
-import org.onosproject.pcepio.protocol.PcepMessage;
-import org.onosproject.pcepio.protocol.PcepOpenMsg;
-import org.onosproject.pcepio.protocol.PcepOpenObject;
-import org.onosproject.pcepio.protocol.PcepType;
-import org.onosproject.pcepio.protocol.PcepVersion;
-import org.onosproject.pcepio.types.ErrorObjListWithOpen;
-import org.onosproject.pcepio.types.PceccCapabilityTlv;
-import org.onosproject.pcepio.types.StatefulPceCapabilityTlv;
-import org.onosproject.pcepio.types.PcepErrorDetailInfo;
-import org.onosproject.pcepio.types.PcepValueType;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Channel handler deals with the pcc client connection and dispatches
- * messages from client to the appropriate locations.
- */
-class PcepChannelHandler extends IdleStateAwareChannelHandler {
- static final byte DEADTIMER_MAXIMUM_VALUE = (byte) 0xFF;
- static final byte KEEPALIVE_MULTIPLE_FOR_DEADTIMER = 4;
- private static final Logger log = LoggerFactory.getLogger(PcepChannelHandler.class);
- private final Controller controller;
- private PcepClientDriver pc;
- private PccId thispccId;
- private Channel channel;
- private byte sessionId = 0;
- private byte keepAliveTime;
- private byte deadTime;
- private PcepPacketStatsImpl pcepPacketStats;
- static final int MAX_WRONG_COUNT_PACKET = 5;
- static final int BYTE_MASK = 0xFF;
-
- // State needs to be volatile because the HandshakeTimeoutHandler
- // needs to check if the handshake is complete
- private volatile ChannelState state;
-
- // When a pcc client with a ip addresss is found (i.e we already have a
- // connected client with the same ip), the new client is immediately
- // disconnected. At that point netty callsback channelDisconnected() which
- // proceeds to cleaup client state - we need to ensure that it does not cleanup
- // client state for the older (still connected) client
- private volatile Boolean duplicatePccIdFound;
-
- //Indicates the pcep version used by this pcc client
- protected PcepVersion pcepVersion;
- protected PcepFactory factory1;
-
- /**
- * Create a new unconnected PcepChannelHandler.
- * @param controller parent controller
- */
- PcepChannelHandler(Controller controller) {
- this.controller = controller;
- this.state = ChannelState.INIT;
- factory1 = controller.getPcepMessageFactory1();
- duplicatePccIdFound = Boolean.FALSE;
- pcepPacketStats = new PcepPacketStatsImpl();
- }
-
- /**
- * To disconnect a PCC.
- */
- public void disconnectClient() {
- pc.disconnectClient();
- }
-
- //*************************
- // Channel State Machine
- //*************************
-
- /**
- * The state machine for handling the client/channel state. All state
- * transitions should happen from within the state machine (and not from other
- * parts of the code)
- */
- enum ChannelState {
- /**
- * Initial state before channel is connected.
- */
- INIT(false) {
-
- },
- /**
- * Once the session is established, wait for open message.
- */
- OPENWAIT(false) {
- @Override
- void processPcepMessage(PcepChannelHandler h, PcepMessage m) throws IOException, PcepParseException {
-
- log.debug("Message received in OPEN WAIT State");
-
- //check for open message
- if (m.getType() != PcepType.OPEN) {
- // When the message type is not open message increment the wrong packet statistics
- h.processUnknownMsg();
- log.debug("message is not OPEN message");
- } else {
-
- h.pcepPacketStats.addInPacket();
- PcepOpenMsg pOpenmsg = (PcepOpenMsg) m;
- // do Capability validation.
- if (h.capabilityValidation(pOpenmsg)) {
- log.debug("Sending handshake OPEN message");
- h.sessionId = pOpenmsg.getPcepOpenObject().getSessionId();
- h.pcepVersion = pOpenmsg.getPcepOpenObject().getVersion();
-
- //setting keepalive and deadTimer
- byte yKeepalive = pOpenmsg.getPcepOpenObject().getKeepAliveTime();
- byte yDeadTimer = pOpenmsg.getPcepOpenObject().getDeadTime();
- h.keepAliveTime = yKeepalive;
- if (yKeepalive < yDeadTimer) {
- h.deadTime = yDeadTimer;
- } else {
- if (DEADTIMER_MAXIMUM_VALUE > (yKeepalive * KEEPALIVE_MULTIPLE_FOR_DEADTIMER)) {
- h.deadTime = (byte) (yKeepalive * KEEPALIVE_MULTIPLE_FOR_DEADTIMER);
- } else {
- h.deadTime = DEADTIMER_MAXIMUM_VALUE;
- }
- }
- h.sendHandshakeOpenMessage();
- h.pcepPacketStats.addOutPacket();
- h.setState(KEEPWAIT);
- } else {
- log.debug("Capability validation failed. Sending PCEP-ERROR message to PCC.");
- // Send PCEP-ERROR message.
- PcepErrorMsg errMsg = h.getErrorMsg(PcepErrorDetailInfo.ERROR_TYPE_2,
- PcepErrorDetailInfo.ERROR_VALUE_2);
- h.channel.write(Collections.singletonList(errMsg));
- }
- }
- }
- },
- /**
- * Once the open messages are exchanged, wait for keep alive message.
- */
- KEEPWAIT(false) {
- @Override
- void processPcepMessage(PcepChannelHandler h, PcepMessage m) throws IOException, PcepParseException {
- log.debug("message received in KEEPWAIT state");
- //check for keep alive message
- if (m.getType() != PcepType.KEEP_ALIVE) {
- // When the message type is not keep alive message increment the wrong packet statistics
- h.processUnknownMsg();
- log.debug("message is not KEEPALIVE message");
- } else {
- // Set the client connected status
- h.pcepPacketStats.addInPacket();
- final SocketAddress address = h.channel.getRemoteAddress();
- if (!(address instanceof InetSocketAddress)) {
- throw new IOException("Invalid client connection. Pcc is indentifed based on IP");
- }
- log.debug("sending keep alive message in KEEPWAIT state");
-
- final InetSocketAddress inetAddress = (InetSocketAddress) address;
- h.thispccId = PccId.pccId(IpAddress.valueOf(inetAddress.getAddress()));
- h.pc = h.controller.getPcepClientInstance(h.thispccId, h.sessionId, h.pcepVersion,
- h.pcepPacketStats);
- // set the status of pcc as connected
- h.pc.setConnected(true);
- h.pc.setChannel(h.channel);
-
- // set any other specific parameters to the pcc
- h.pc.setPcVersion(h.pcepVersion);
- h.pc.setPcSessionId(h.sessionId);
- h.pc.setPcKeepAliveTime(h.keepAliveTime);
- h.pc.setPcDeadTime(h.deadTime);
- int keepAliveTimer = h.keepAliveTime & BYTE_MASK;
- int deadTimer = h.deadTime & BYTE_MASK;
- if (0 == h.keepAliveTime) {
- h.deadTime = 0;
- }
- // handle keep alive and dead time
- if (keepAliveTimer != PcepPipelineFactory.DEFAULT_KEEP_ALIVE_TIME
- || deadTimer != PcepPipelineFactory.DEFAULT_DEAD_TIME) {
-
- h.channel.getPipeline().replace("idle", "idle",
- new IdleStateHandler(PcepPipelineFactory.TIMER, deadTimer, keepAliveTimer, 0));
- }
- log.debug("Dead timer : " + deadTimer);
- log.debug("Keep alive time : " + keepAliveTimer);
-
- //set the state handshake completion.
- h.sendKeepAliveMessage();
- h.pcepPacketStats.addOutPacket();
- h.setHandshakeComplete(true);
-
- if (!h.pc.connectClient()) {
- disconnectDuplicate(h);
- } else {
- h.setState(ESTABLISHED);
- }
- }
- }
- },
- /**
- * Once the keep alive messages are exchanged, the state is established.
- */
- ESTABLISHED(true) {
- @Override
- void processPcepMessage(PcepChannelHandler h, PcepMessage m) throws IOException, PcepParseException {
-
- //h.channel.getPipeline().remove("waittimeout");
- log.debug("Message received in established state " + m.getType());
- //dispatch the message
- h.dispatchMessage(m);
- }
- };
- private boolean handshakeComplete;
-
- ChannelState(boolean handshakeComplete) {
- this.handshakeComplete = handshakeComplete;
- }
-
- void processPcepMessage(PcepChannelHandler h, PcepMessage m) throws IOException, PcepParseException {
- // do nothing
- }
-
- /**
- * Is this a state in which the handshake has completed.
- *
- * @return true if the handshake is complete
- */
- public boolean isHandshakeComplete() {
- return this.handshakeComplete;
- }
-
- protected void disconnectDuplicate(PcepChannelHandler h) {
- log.error("Duplicated Pcc IP or incompleted cleanup - " + "disconnecting channel {}",
- h.getClientInfoString());
- h.duplicatePccIdFound = Boolean.TRUE;
- h.channel.disconnect();
- }
-
- /**
- * Sets handshake complete status.
- *
- * @param handshakeComplete status of handshake
- */
- public void setHandshakeComplete(boolean handshakeComplete) {
- this.handshakeComplete = handshakeComplete;
- }
-
- }
-
- @Override
- public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
- channel = e.getChannel();
- log.info("PCC connected from {}", channel.getRemoteAddress());
-
- // Wait for open message from pcc client
- setState(ChannelState.OPENWAIT);
- }
-
- @Override
- public void channelDisconnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
- log.info("Pcc disconnected callback for pc:{}. Cleaning up ...", getClientInfoString());
- if (thispccId != null) {
- if (!duplicatePccIdFound) {
- // if the disconnected client (on this ChannelHandler)
- // was not one with a duplicate-dpid, it is safe to remove all
- // state for it at the controller. Notice that if the disconnected
- // client was a duplicate-ip, calling the method below would clear
- // all state for the original client (with the same ip),
- // which we obviously don't want.
- log.debug("{}:removal called", getClientInfoString());
- if (pc != null) {
- pc.removeConnectedClient();
- }
- } else {
- // A duplicate was disconnected on this ChannelHandler,
- // this is the same client reconnecting, but the original state was
- // not cleaned up - XXX check liveness of original ChannelHandler
- log.debug("{}:duplicate found", getClientInfoString());
- duplicatePccIdFound = Boolean.FALSE;
- }
- } else {
- log.warn("no pccip in channelHandler registered for " + "disconnected client {}", getClientInfoString());
- }
- }
-
- @Override
- public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception {
- PcepErrorMsg errMsg;
- log.info("exceptionCaught: " + e.toString());
-
- if (e.getCause() instanceof ReadTimeoutException) {
- if (ChannelState.OPENWAIT == state) {
- // When ReadTimeout timer is expired in OPENWAIT state, it is considered
- // OpenWait timer.
- errMsg = getErrorMsg(PcepErrorDetailInfo.ERROR_TYPE_1, PcepErrorDetailInfo.ERROR_VALUE_2);
- log.debug("Sending PCEP-ERROR message to PCC.");
- channel.write(Collections.singletonList(errMsg));
- channel.close();
- state = ChannelState.INIT;
- return;
- } else if (ChannelState.KEEPWAIT == state) {
- // When ReadTimeout timer is expired in KEEPWAIT state, is is considered
- // KeepWait timer.
- errMsg = getErrorMsg(PcepErrorDetailInfo.ERROR_TYPE_1, PcepErrorDetailInfo.ERROR_VALUE_7);
- log.debug("Sending PCEP-ERROR message to PCC.");
- channel.write(Collections.singletonList(errMsg));
- channel.close();
- state = ChannelState.INIT;
- return;
- }
- } else if (e.getCause() instanceof ClosedChannelException) {
- log.debug("Channel for pc {} already closed", getClientInfoString());
- } else if (e.getCause() instanceof IOException) {
- log.error("Disconnecting client {} due to IO Error: {}", getClientInfoString(), e.getCause().getMessage());
- if (log.isDebugEnabled()) {
- // still print stack trace if debug is enabled
- log.debug("StackTrace for previous Exception: ", e.getCause());
- }
- channel.close();
- } else if (e.getCause() instanceof PcepParseException) {
- PcepParseException errMsgParse = (PcepParseException) e.getCause();
- byte errorType = errMsgParse.getErrorType();
- byte errorValue = errMsgParse.getErrorValue();
-
- if ((errorType == (byte) 0x0) && (errorValue == (byte) 0x0)) {
- processUnknownMsg();
- } else {
- errMsg = getErrorMsg(errorType, errorValue);
- log.debug("Sending PCEP-ERROR message to PCC.");
- channel.write(Collections.singletonList(errMsg));
- }
- } else if (e.getCause() instanceof RejectedExecutionException) {
- log.warn("Could not process message: queue full");
- } else {
- log.error("Error while processing message from client " + getClientInfoString() + "state " + this.state);
- channel.close();
- }
- }
-
- @Override
- public String toString() {
- return getClientInfoString();
- }
-
- @Override
- public void channelIdle(ChannelHandlerContext ctx, IdleStateEvent e) throws Exception {
- if (!isHandshakeComplete()) {
- return;
- }
-
- if (e.getState() == IdleState.READER_IDLE) {
- // When no message is received on channel for read timeout, then close
- // the channel
- log.info("Disconnecting client {} due to read timeout", getClientInfoString());
- ctx.getChannel().close();
- } else if (e.getState() == IdleState.WRITER_IDLE) {
- // Send keep alive message
- log.debug("Sending keep alive message due to IdleState timeout " + pc.toString());
- pc.sendMessage(Collections.singletonList(pc.factory().buildKeepaliveMsg().build()));
- }
- }
-
- @Override
- public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
- if (e.getMessage() instanceof List) {
- @SuppressWarnings("unchecked")
- List<PcepMessage> msglist = (List<PcepMessage>) e.getMessage();
- for (PcepMessage pm : msglist) {
- // Do the actual packet processing
- state.processPcepMessage(this, pm);
- }
- } else {
- state.processPcepMessage(this, (PcepMessage) e.getMessage());
- }
- }
-
- /**
- * To set the handshake status.
- *
- * @param handshakeComplete value is handshake status
- */
- public void setHandshakeComplete(boolean handshakeComplete) {
- this.state.setHandshakeComplete(handshakeComplete);
- }
-
- /**
- * Is this a state in which the handshake has completed.
- *
- * @return true if the handshake is complete
- */
- public boolean isHandshakeComplete() {
- return this.state.isHandshakeComplete();
- }
-
- /**
- * To handle the pcep message.
- *
- * @param m pcep message
- */
- private void dispatchMessage(PcepMessage m) {
- pc.handleMessage(m);
- }
-
- /**
- * Return a string describing this client based on the already available
- * information (ip address and/or remote socket).
- *
- * @return display string
- */
- private String getClientInfoString() {
- if (pc != null) {
- return pc.toString();
- }
- String channelString;
- if (channel == null || channel.getRemoteAddress() == null) {
- channelString = "?";
- } else {
- channelString = channel.getRemoteAddress().toString();
- }
- String pccIpString;
- // TODO : implement functionality to get pcc id string
- pccIpString = "?";
- return String.format("[%s PCCIP[%s]]", channelString, pccIpString);
- }
-
- /**
- * Update the channels state. Only called from the state machine.
- *
- * @param state
- */
- private void setState(ChannelState state) {
- this.state = state;
- }
-
- /**
- * Send handshake open message.
- *
- * @throws IOException,PcepParseException
- */
- private void sendHandshakeOpenMessage() throws IOException, PcepParseException {
- PcepOpenObject pcepOpenobj = factory1.buildOpenObject()
- .setSessionId(sessionId)
- .setKeepAliveTime(keepAliveTime)
- .setDeadTime(deadTime)
- .build();
- PcepMessage msg = factory1.buildOpenMsg()
- .setPcepOpenObj(pcepOpenobj)
- .build();
- log.debug("Sending OPEN message to {}", channel.getRemoteAddress());
- channel.write(Collections.singletonList(msg));
- }
-
- /**
- * Capability Validation.
- *
- * @param pOpenmsg pcep open message
- * @return success or failure
- */
- private boolean capabilityValidation(PcepOpenMsg pOpenmsg) {
- LinkedList<PcepValueType> tlvList = pOpenmsg.getPcepOpenObject().getOptionalTlv();
- boolean bFoundPceccCapability = false;
- boolean bFoundStatefulPceCapability = false;
- boolean bFoundPcInstantiationCapability = false;
-
- ListIterator<PcepValueType> listIterator = tlvList.listIterator();
- while (listIterator.hasNext()) {
- PcepValueType tlv = listIterator.next();
-
- switch (tlv.getType()) {
- case PceccCapabilityTlv.TYPE:
- bFoundPceccCapability = true;
- break;
- case StatefulPceCapabilityTlv.TYPE:
- bFoundStatefulPceCapability = true;
- StatefulPceCapabilityTlv stetefulPcCapTlv = (StatefulPceCapabilityTlv) tlv;
- if (stetefulPcCapTlv.getIFlag()) {
- bFoundPcInstantiationCapability = true;
- }
- break;
- default:
- continue;
- }
- }
-
- return (bFoundPceccCapability && bFoundStatefulPceCapability && bFoundPcInstantiationCapability);
- }
-
- /**
- * Send keep alive message.
- *
- * @throws IOException when channel is disconnected
- * @throws PcepParseException while building keep alive message
- */
- private void sendKeepAliveMessage() throws IOException, PcepParseException {
- PcepMessage msg = factory1.buildKeepaliveMsg().build();
- log.debug("Sending KEEPALIVE message to {}", channel.getRemoteAddress());
- channel.write(Collections.singletonList(msg));
- }
-
- /**
- * Send error message and close channel with pcc.
- */
- private void sendErrMsgAndCloseChannel() {
- // TODO send error message
- channel.close();
- }
-
- /**
- * Send error message when an invalid message is received.
- *
- * @throws PcepParseException while building error message
- */
- private void sendErrMsgForInvalidMsg() throws PcepParseException {
- byte errorType = 0x02;
- byte errorValue = 0x00;
- PcepErrorMsg errMsg = getErrorMsg(errorType, errorValue);
- channel.write(Collections.singletonList(errMsg));
- }
-
- /**
- * Builds pcep error message based on error value and error type.
- *
- * @param errorType pcep error type
- * @param errorValue pcep error value
- * @return pcep error message
- * @throws PcepParseException while bulding error message
- */
- public PcepErrorMsg getErrorMsg(byte errorType, byte errorValue) throws PcepParseException {
- LinkedList<PcepErrorObject> llerrObj = new LinkedList<>();
- PcepErrorMsg errMsg;
-
- PcepErrorObject errObj = factory1.buildPcepErrorObject()
- .setErrorValue(errorValue)
- .setErrorType(errorType)
- .build();
-
- llerrObj.add(errObj);
-
- if (state == ChannelState.OPENWAIT) {
- //If Error caught in Openmessage
- PcepOpenObject openObj = null;
- ErrorObjListWithOpen errorObjListWithOpen = null;
-
- if (0 != sessionId) {
- openObj = factory1.buildOpenObject().setSessionId(sessionId).build();
- errorObjListWithOpen = new ErrorObjListWithOpen(llerrObj, openObj);
- } else {
- errorObjListWithOpen = new ErrorObjListWithOpen(llerrObj, null);
- }
-
- errMsg = factory1.buildPcepErrorMsg()
- .setErrorObjListWithOpen(errorObjListWithOpen)
- .build();
- } else {
-
- //If Error caught in other than Openmessage
- LinkedList<PcepError> llPcepErr = new LinkedList<>();
-
- PcepError pcepErr = factory1.buildPcepError()
- .setErrorObjList(llerrObj)
- .build();
-
- llPcepErr.add(pcepErr);
-
- PcepErrorInfo errInfo = factory1.buildPcepErrorInfo()
- .setPcepErrorList(llPcepErr)
- .build();
-
- errMsg = factory1.buildPcepErrorMsg()
- .setPcepErrorInfo(errInfo)
- .build();
- }
- return errMsg;
- }
-
- /**
- * Process unknown pcep message received.
- *
- * @throws PcepParseException while building pcep error message
- */
- public void processUnknownMsg() throws PcepParseException {
- Date now = null;
- if (pcepPacketStats.wrongPacketCount() == 0) {
- now = new Date();
- pcepPacketStats.setTime(now.getTime());
- pcepPacketStats.addWrongPacket();
- sendErrMsgForInvalidMsg();
- }
-
- if (pcepPacketStats.wrongPacketCount() > 1) {
- Date lastest = new Date();
- pcepPacketStats.addWrongPacket();
- //converting to seconds
- if (((lastest.getTime() - pcepPacketStats.getTime()) / 1000) > 60) {
- now = lastest;
- pcepPacketStats.setTime(now.getTime());
- pcepPacketStats.resetWrongPacket();
- pcepPacketStats.addWrongPacket();
- } else if (((int) (lastest.getTime() - now.getTime()) / 1000) < 60) {
- if (MAX_WRONG_COUNT_PACKET <= pcepPacketStats.wrongPacketCount()) {
- //reset once wrong packet count reaches MAX_WRONG_COUNT_PACKET
- pcepPacketStats.resetWrongPacket();
- // max wrong packets received send error message and close the session
- sendErrMsgAndCloseChannel();
- }
- }
- }
- }
-}